LTC1164ACN#PBF

Overview

The LTC1164ACN#PBF is a low power, low noise quad universal filter building block manufactured by Analog Devices Inc. It integrates four independent second-order switched capacitor filter sections within a single 24-lead PDIP package. The device operates from dual power supplies ranging from ±2.37V to ±8V and typically consumes 850µA per section. Each section supports center frequency tuning via external clock signals with ratios of 50:1 or 100:1, enabling center frequencies from 0.1Hz to 20kHz for Q values below 5. Key electrical specifications include a maximum supply voltage of ±8V, a DC open-loop gain of 80dB, and a gain-bandwidth product of 2MHz.

Feature Summary

• Integrates four independent second-order switched capacitor filter sections in a compact package
• Supports versatile filter topologies including lowpass, highpass, bandpass, and notch configurations
• Features low power consumption without compromising signal-to-noise performance
• Allows flexible clock-to-center frequency tuning through external clock inputs

Applications

• Antialiasing filters for data acquisition systems
• Telecommunications channel selection and filtering
• Spectral analysis equipment requiring precise frequency response
• Loop filters in phase-locked loops and control circuits

Procurement Notes

Verify the specific AC grade temperature range (-40°C to 85°C) against application requirements. Confirm the 24-lead PDIP package dimensions match the PCB footprint. Ensure the design accommodates the required analog and digital ground separation techniques described in the datasheet to maintain specified noise performance.

Selection Notes

Select this component when multiple independent filter stages are needed in a single IC form factor. Consider the AC grade if operation outside commercial temperatures is required. Evaluate the need for external resistors versus customized internal resistor versions. Verify that the available clock frequencies align with the desired center frequency ranges for the target filter order.

Part Context

This part belongs to the LTC1164 family of switched capacitor filters. The 'AC' suffix denotes the industrial temperature grade variant. The '#PBF' suffix indicates lead-free packaging compliant with RoHS standards. It serves as a general-purpose building block compared to fixed-function variants like the LTC1164-XX series.

Replacement Considerations

The N24 package is listed as an alternate source option. Direct functional replacements may include the LTC1059, LTC1060, or LTC1061, though these devices have different mode equations and pinouts. Customized monolithic versions with internal thin-film resistors are available upon consultation with manufacturer marketing.